Nb_3Sn CICC导体接头电阻测试

Measurement of the joint resistance of the Nb_3Sn CICC conductors

介绍了用于测试大电流Nb3Sn管内电缆导体接头电阻的超导变压器系统。该超导变压器包括初级线圈和次级线圈,其中初级线圈采用Nb Ti超导股线绕制;次级线圈采用Nb3Sn CICC导体绕制。初级线圈和次级线圈均浸泡在液氦中冷却。利用超导变压器对Nb3Sn CICC导体超导接头的测试结果表明,所设计的超导接头电阻满足设计要求。

This paper described the development of a superconducting transformer system for the high current test of the su- perconducting joints for the Nb3 Sn Cable - In - Conduit Conductor （ CICC ）. The transformer consisted of a primary solenoid which was enclosed by a secondary. The primary solenoid coil was wound with NhTi superconducting strands, and the primary coil wound with Nb3 Sn CICC conductors. The Nb3 Sn coil and the NbTi coils were immersed in the liquid helium. The experimental resuits show that the superconducting joint resistances for the Nb3Sn CICC conductor can satisfy the design requirements.